Programming instructions

ADT-CNC4620 Programming Manual
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P(Δi): single radial (X axis) offset of the tool, radius, unsigned. Offset direction is
same to the radial direction of the end coordinates.
Q(Δk): single axial (Z axis) feeding of the tool, unsigned. Feeding direction is same to
the axial direction of the end coordinates.
R(Δd): radial (X axis) tool retreating after cutting to the groove bottom, unsigned. The
retreating direction is opposite to the radial offset direction.
F: axial grooving cycle feeding speed
A1 start point Bn end point
Execution process:
① First grooving cycle: A
1
→B
1
→C
1→D1→A2
A1→B1: axially feed to point B1 in pecking style; B1→C1→D1→A2: fast moving (the
cycle B1→C1 doesn’t have tool retreating action)
② Second grooving cycle: A
2
→B
2
→C
2→D2→A3
A2→B2: axially feed to point B2 in pecking style; B2→C2→D2→A3: fast moving.
③ The n
th
grooving cycle: A
n
→B
n
→C
n→Dn→A1
An→Bn: axially feed to point Bn in pecking style; Bn→Cn→Dn→A1: fast moving. G74 grooving
cycle ends
Function description:
1)
The position of thee cutting start (A1) should be specified before grooving cycle, or else the system
takes current point as the cutting start.
2) In the first grooving cycle, the tool isn’t retreated in radial direction when cut to the
groove bottom (B1)
3) If X/U isn’t specified or movement is 0, the system considers P(Δi) as 0 no matter
whether P(Δi) is specified. In this case, only Z axis acts and cuts to groove end, and the
tool isn’t retreated in radial direction.
4) Pecking style tool feeding cycle